Since the enter key really only does link navigation in the page group, I was wondering if we can reload/add it with pageturn function as well. The motivation of doing this is that, I feel, the enter key is the most comfortable one to press on PRS-505. And needless to say, next_page is the MOST frequently used key on an eReader.

In order to achieve this, I have to modify main.xml with something like this sudo code:

This way, we can still preserve the link navigation function of the enter key. Now the question is, what is the library function for judging if an object is a link, and if it is, what is the library function to follow this link?